CN209271913U - A kind of silicon powder impurity pneumatic separation device - Google Patents

A kind of silicon powder impurity pneumatic separation device Download PDF

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Publication number
CN209271913U
CN209271913U CN201821788715.8U CN201821788715U CN209271913U CN 209271913 U CN209271913 U CN 209271913U CN 201821788715 U CN201821788715 U CN 201821788715U CN 209271913 U CN209271913 U CN 209271913U
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CN
China
Prior art keywords
sieve
powder
cabinet
separation device
pneumatic separation
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Expired - Fee Related
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CN201821788715.8U
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Chinese (zh)
Inventor
汪伟华
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Zhejiang Yi Yang Solar Power Science And Technology Ltd
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Zhejiang Yi Yang Solar Power Science And Technology Ltd
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Priority to CN201821788715.8U priority Critical patent/CN209271913U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a kind of silicon powder impurity pneumatic separation devices, belong to photovoltaic technology field, it solves the problems, such as that the removal of silicon powder impurity is inconvenient in the prior art.This silicon powder impurity pneumatic separation device includes cabinet, cabinet side is equipped with blower, top of the box is equipped with feed inlet, the first sieve, the second sieve and third sieve are respectively equipped in cabinet, cabinet is equipped with discharge port far from blower side, the mesh number of first sieve, the second sieve and third sieve is sequentially increased, and is equipped with powder collection box below the first sieve, the second sieve and third sieve.This silicon powder impurity pneumatic separation device is filtered powder by the sieve of different pore size, so that powder is fallen into according to different-grain diameter in different powder collection boxes, then by manual sorting, sorting efficiency can be improved.

Description

A kind of silicon powder impurity pneumatic separation device
Technical field
The utility model belongs to photovoltaic technology field, and be related to a kind of silicon material selects device, especially a kind of removal silicon material Metal impurities select device.
Background technique
Solar power generation is the important means of human use's solar energy, and solar battery is then the master for realizing photoelectric conversion Device is wanted, the photoelectric conversion efficiency of solar battery determines the utilization conversion ratio of solar energy source.In recent years, world's solar-electricity The speed of the yield in pond and installed capacity every year all 30% is fast-developing.Currently, the accumulative installed capacity in the whole world is 25.4GW, in advance It counts the installed capacity of the year two thousand twenty whole world and is up to 278GW.
Recently as silicon solar industry high speed development, market competition is more and more fierce, to reduce silicon wafer production cost, Silicon wafer is improved in market competition, the useless silicon material that production process generates need to be recycled and be used.It recycles and exists in the broken silicon material used Impurity, it is therefore desirable to be crushed, be screened, pickling, drying form powder, and powder carries out flotation again and carries out last purification, so And there are still some non-silicon class impurity that cannot exclude in some floatation process, due to floatation process not can be removed it is lighter than flour Fine impurities, these impurity hand picking difficulty are higher, progress is slower, recycle that there are certain influences to silicon material.
Utility model content
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes one kind and goes lightweight in removing silicon powder The silicon powder impurity pneumatic separation device of impurity.
The purpose of this utility model can be realized by the following technical scheme: a kind of silicon powder impurity pneumatic separation device, feature Be: including cabinet, the cabinet side is equipped with blower, and the top of the box is equipped with feed inlet, divides in the cabinet Not She You the first sieve, the second sieve and third sieve, the cabinet far from blower side be equipped with discharge port, described first The mesh number of sieve, the second sieve and third sieve is sequentially increased, below first sieve, the second sieve and third sieve Equipped with powder collection box.
Powder after flotation, large granular impurity have been removed, and remaining is all the non-silicon also smaller than powder itself Expect impurity, therefore this pneumatic separation device practical function is to retain powder, is collected to impurity, therefore using the sieve of different pore size Net gradually sifts out short grained powder, and the powder of smallest particles directly returns to baking oven by discharge port and continues with.
In above-mentioned silicon powder impurity pneumatic separation device, the blower is frequency conversion fan.Frequency conversion fan can be according to powder grain Diameter size regulating air volume.Meanwhile air quantity is gradually increased according to the powder that feed inlet enters is ascending, so that small particle The right discharge port of impurity is expelled directly out, and large-sized powder and impurity are respectively fallen in the powder collection box below corresponding sieve, so Impurity is chosen by artificial screening afterwards, because the powder and impurity of different-grain diameter are sorted out, facilitates artificial screening.
In above-mentioned silicon powder impurity pneumatic separation device, baffle-box, the baffle-box are additionally provided with above the feed inlet Top is equipped with opening.The purpose of baffle-box is to close feed inlet when powder pours into, and buffering box opening is closed when feed inlet is opened, Therefore dust will not be caused to overflow along feed inlet because of the opening and closing of feed inlet at work in blower, reduces the wave of powder Take, while guaranteeing that the blowing direction of blower is unaffected.
In above-mentioned silicon powder impurity pneumatic separation device, it is located at feed inlet in the cabinet, and is located at below blower and sets There is powder to keep in platform.
When being fallen into cabinet by feed inlet, part powder is directly blown to sieve by blower and carries out sieve material powder, and another Part is then fallen on temporary platform, and the powder kept on temporary platform can be gradually increased air quantity by adjusting the air force of blower, Small size particle is first blown afloat, is blown afloat after large-size particles, to improve efficiency of the powder by sieve, prevents a large amount of particles stifled Screening efficiency is influenced on sieve in front.
In above-mentioned silicon powder impurity pneumatic separation device, vibration motor is equipped with below the cabinet.It will by vibration motor Powder on temporary platform carries out vibration separation, and cooperation blower blowing can efficiently separate powder and impurity.
In above-mentioned silicon powder impurity pneumatic separation device, first sieve is 10 mesh, and the second sieve is 20 mesh, third sieve Net is 30 mesh.
Compared with prior art, this silicon powder impurity pneumatic separation device is filtered powder by the sieve of different pore size, makes It obtains powder to fall into according to different-grain diameter in different powder collection boxes, then by manual sorting, sorting efficiency can be improved, and it is small Partial size impurity then directly blows out directly return baking oven by discharge port and continues with, and improves powder impurity separative efficiency, utilizes wind Machine adjusts different air forces, so that powder and impurity is ascending is gradually disengaged, improves efficiency of the powder by sieve, into One step improves powder selection by winnowing efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this silicon powder impurity pneumatic separation device.
In figure, 1, cabinet;11, feed inlet;12, discharge port;2, blower;31, the first sieve;32, the second sieve;33, Three sieves;4, powder collection box;5, baffle-box;51, it is open;6, powder keeps in platform;61, vibration motor.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.
As shown in Figure 1, this silicon powder impurity pneumatic separation device, including cabinet 1,1 side of cabinet are equipped with frequency conversion fan 2, It is equipped with feed inlet 11 at the top of the cabinet 1, is respectively equipped with the first sieve 31, the second sieve 32 and third in the cabinet 1 Sieve 33, the cabinet 1 are equipped with discharge port 12, first sieve 31, the second sieve 32 and third far from 2 side of blower The mesh number of sieve 33 is sequentially increased, and powder receipts are equipped with below first sieve 31, the second sieve 32 and third sieve 33 Collect box 4, first sieve 31 is 10 mesh, and the second sieve 32 is 20 mesh, and third sieve 33 is 30 mesh.
Powder after flotation, large granular impurity have been removed, and remaining is all the non-silicon also smaller than powder itself Expect impurity, therefore this pneumatic separation device practical function is to retain powder, is collected to impurity, therefore using the sieve of different pore size Net gradually sifts out short grained powder, and the powder of smallest particles directly returns to baking oven by discharge port 12 and continues with.Frequency conversion fan 2 It can be according to powder particle size size regulating air volume.Meanwhile wind is gradually increased according to the powder that feed inlet 11 enters is ascending Amount, so that the right discharge port 12 of the impurity of small particle is expelled directly out, large-sized powder and impurity are respectively fallen in below corresponding sieve Powder collection box 4 in, impurity is then chosen by artificial screening, it is convenient because the powder and impurity of different-grain diameter are sorted out Artificial screening.
In this silicon powder impurity pneumatic separation device, it is additionally provided with baffle-box 5 above the feed inlet 11, on the baffle-box 5 Side is equipped with opening 51.The purpose of baffle-box 5 is closing feed inlet 11 when powder pours into, and baffle-box 5 is opened when feed inlet 11 is opened Mouth 51 is closed, therefore dust will not be caused to overflow along feed inlet 11 because of the opening and closing of feed inlet 11 at work in blower 2, The waste of powder is reduced, while guaranteeing that the blowing direction of blower 2 is unaffected.Vibration motor 61 is equipped with below the cabinet 1. The powder on temporary platform is subjected to vibration separation by vibration motor 61, cooperation blower 2 dries, can effectively divide powder and impurity From.
In this silicon powder impurity pneumatic separation device, it is located at feed inlet 11 in the cabinet 1, and is located at below blower 2 and is equipped with Powder keeps in platform 6.When being fallen into cabinet 1 by feed inlet 11, part powder is directly blown to sieve by blower 2 and is sieved powder Material, and another part is then fallen on temporary platform, the powder kept on temporary platform can be by adjusting the air force of blower 2 gradually Increase air quantity, small size particle is first blown afloat, is blown afloat after large-size particles, to improve efficiency of the powder by sieve, is prevented A large amount of particles, which are got lodged on the sieve of front, influences screening efficiency.
The course of work of this silicon powder impurity pneumatic separation device is as follows:
Powder is poured by the opening 51 of baffle-box 5 first, is then shut off baffle-box 5, opens blower 2, opens feed inlet 11, powder is fallen into cabinet 1 from feed inlet 11, and under the action of blower 2, the powder of small particle is blown at sieve, most of Powder is fallen on temporary platform, opens vibration motor 61 at this time, and the powder kept on platform is made in the wind-force of vibration motor 61 and blower 2 With lower to movement at sieve, when powder particle size wears only sieve, then fall into corresponding powder collection box 4, with blower 2 Air quantity continues to increase, in the ascending powder collection box 4 for being blown afloat respectively and falling into corresponding partial size of powder, until blower 2 is most At the discharge port 12 of distal end, the impurity of minimum grain size is then directly discharged by discharge port 12, is continued with into drying box, cabinet The powder collection box 4 of 1 bottom is used to collect the powder of different-grain diameter, be collected into it is a certain amount of after, 4 bottom of powder collection box is equipped with and opens Mouth 51, everywhere by the powder in powder collection box 4, then can carry out manual sorting.
This silicon powder impurity pneumatic separation device is filtered powder by the sieve of different pore size, so that powder is according to different grains Diameter is fallen into different powder collection boxes 4, and then by manual sorting, sorting efficiency can be improved, and small particle impurity is then direct Directly return baking oven is blown out by discharge port 12 to continue with, and is improved powder impurity separative efficiency, is adjusted different wind using blower 2 Size is measured, so that powder and impurity is ascending is gradually disengaged, improves efficiency of the powder by sieve, further improve powder Expect selection by winnowing efficiency.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (6)

1. a kind of silicon powder impurity pneumatic separation device, it is characterised in that: including cabinet, the cabinet side is equipped with blower, described Top of the box is equipped with feed inlet, is respectively equipped with the first sieve, the second sieve and third sieve, the cabinet in the cabinet It is equipped with discharge port far from blower side, the mesh number of first sieve, the second sieve and third sieve is sequentially increased, described Powder collection box is equipped with below first sieve, the second sieve and third sieve.
2. a kind of silicon powder impurity pneumatic separation device according to claim 1, it is characterised in that: the blower is frequency conversion wind Machine.
3. a kind of silicon powder impurity pneumatic separation device according to claim 1 or 2, it is characterised in that: above the feed inlet It is additionally provided with baffle-box, is equipped with opening above the baffle-box.
4. a kind of silicon powder impurity pneumatic separation device according to claim 1 or 2, it is characterised in that: be located in the cabinet At feed inlet, and it is located at below blower and is equipped with the temporary platform of powder.
5. a kind of silicon powder impurity pneumatic separation device according to claim 4, it is characterised in that: be equipped with shake below the cabinet Dynamic motor.
6. a kind of silicon powder impurity pneumatic separation device according to claim 1 or 2, it is characterised in that: first sieve is 10 mesh, the second sieve are 20 mesh, and third sieve is 30 mesh.
CN201821788715.8U 2018-10-31 2018-10-31 A kind of silicon powder impurity pneumatic separation device Expired - Fee Related CN209271913U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821788715.8U CN209271913U (en) 2018-10-31 2018-10-31 A kind of silicon powder impurity pneumatic separation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821788715.8U CN209271913U (en) 2018-10-31 2018-10-31 A kind of silicon powder impurity pneumatic separation device

Publications (1)

Publication Number Publication Date
CN209271913U true CN209271913U (en) 2019-08-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109351630A (en) * 2018-10-31 2019-02-19 浙江羿阳太阳能科技有限公司 A kind of silicon powder impurity pneumatic separation device
CN114082632A (en) * 2020-09-24 2022-02-25 溆浦县金香农业开发有限公司 Tea screening equipment
CZ309272B6 (en) * 2020-09-30 2022-07-06 Vysoká Škola Báňská-Technická Univerzita Ostrava Line for treating additive material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109351630A (en) * 2018-10-31 2019-02-19 浙江羿阳太阳能科技有限公司 A kind of silicon powder impurity pneumatic separation device
CN114082632A (en) * 2020-09-24 2022-02-25 溆浦县金香农业开发有限公司 Tea screening equipment
CZ309272B6 (en) * 2020-09-30 2022-07-06 Vysoká Škola Báňská-Technická Univerzita Ostrava Line for treating additive material

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190820

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CF01 Termination of patent right due to non-payment of annual fee